Q: Is 21,000,023 a Prime Number?
A: No, 21,000,023 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 21000023 can be evenly divided by 1 11 47 151 269 517 1,661 2,959 7,097 12,643 40,619 78,067 139,073 446,809 1,909,093 and 21,000,023, with no remainder.
Since 21,000,023 cannot be divided by just 1 and 21,000,023, it is not a prime number.
| Number | 21,000,021 | 21,000,022 | 21,000,024 | 21,000,025 |
| Prime? | no | no | no | no |